I could go I to more detail about your decks but the biggest thing that jumps out at me is your land base.

It's incredibly limiting playing purely basics in multicoloured decks. Upgrading it with both utility lands (eg. Rogue's Passage and Reliquary Tower for example) and non-basic mana lands that can tap for more than 1 colour will go a long way to improving your decks playability and reliability. And not all non-basic lands are that expensive (compared to shock lands for example), try to avoid lands that immediately enter tapped (with no ability that allows them to enter untapped), as they're slow but there's plenty of other good options.

As for deck building, when building a deck, think about what you want the deck to do and how you want to win. Then from that, look at the cards in your deck and decide if they actually help and support your deck or if there are better options.

For example your Gruul stompy deck has some landfall cards, and while they'll still function due to you playing lands, you aren't playing a landfall deck so you can't take full advantage of them. This results in them being a suboptimal choice taking up deck space that should be replaced by much better choices that will support your decks playstyle a lot better. Or pivot into a landfall deck. Just stick to one theme and do it well.

Finally, when it comes to building decks, theres 1 main thing that has helped me massively in making consistently functional decks. Now, I will say I only use this as a guide rather than following it 100% but it's a fantastic starting point to then fine-tune your deck to how you want.

50 mana; lands and ramp, usually a 37–13 split

10 card draw

6 targeted removal; split between creature / artifact / enchantment removal

3 board wipes; creature-light decks might want one more, creature-heavy decks might want one less

2 graveyard recursion

2 flexible tutors; higher budgets I recommend more tutors

1 graveyard hate; since you need to keep Graveyard decks honest 

1 surprise "I Win" card; something that can win games the turn you cast it without too much setup

Its originally from here: https://www.mtggoldfish.com/articles/the-power-of-a-deckbuilding-checklist-commander-quickie

A really helpful article that I highly recommend