Does this planet map outline look correct? (Mostly about mountain ranges)

[Technocolor]

Hey, been lurking for a little while now since I recently-ish decided I should probably make a world map for the fantasy story i've been writing because just having a vague idea of the country the main characters live in is limiting especially now that I wanna take it in a more adventure direction. My idea is for it to be a pretty large planet with a lot of untamed wilderness, even up until the time period when the story takes place which has very similar tech levels to us. (in some ways better, some ways worse) Following along Artifaxians world building guide I made the radius 1.33 Earth and wanting similar gravity a mass of 1.75 Earth's putting this planet almost-ish at a super Earth size. (along with a solar system but thats not relevant right now : P)

Im wondering if the mountain ranges are appropriate in scale as well as well as okay in position. Thinner lines being either older more weathered mountains or just thinner ranges. Ive also thrown in a large river outline which I'd like to start initially from a big lake maybe. My intent for the largest continent was to have it almost split entirely by mountains making the middle of the continent extremely hard to cross with the largest gap in the north being maybe Siberia esq in climate so yeah pretty poor for traversing. (the planet on average is colder then earth, maybe 7*c? So itll start getting colder at lower latitudes compared to Earth) Oh and I was also thinking maybe the two large continents were pretty recently connected by a land bridge (maybe 500ish years or so?) but then that like flooded over and/or a huge volcano erupted like Krakatoa did in 1883 but larger near the halfway point destroying the land bridge. Idk I wanted to avoid the situation that happened when Europeans started migrating to the Americas and bringing their plagues which wiped out almost the entire native populations. I could of course have it be that God got angry and blew it up but Id rather that be a myth and then have an actual possible scientific reason behind it. (a theme Id like to have across the map, fantastical landscapes that could be explained by science but maybe not entirely as thats a theme in the story itself) And let me know what kind of adjustments I should make to the land mask. I feel like I need more islands and inlets in the polar regions maybe because thats what an ice age does apparently but idk if those would even be large enough to be seen on a world map this size. (lmao idk what the map scale here even is, Id prefer to not get over 10,000 pxs in length. Nasa's blue marble Next Generation images are 21,600 pxs in length and are 500 meters/pixel according to its info page so thats a scale of 1/500 at the equator in an equirectangular map I think??) Oh and also how much surface area should the ocean cover and to determine if my map reflects that do I use G.Projecter to get an equal area map and see what percent of total pixels of the map is black? And does it need more water because its more massive or slightly less water because the gravity is slightly lower? (about 98 though
Thanks~ And I think Ill name it Paradoven